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Leasehold Improvements and Equipment (Details) - USD ($) | Dec. 30, 2017 | Dec. 31, 2016
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Leasehold Improvements And Equipment Details |  |
Laboratory equipment (10 years) | $ 1,869,000 | $ 1,142,000
Leasehold improvements (Until the end of the lease term) | 1,699,000 | 1,332,000
Computer equipment (3 to 5 years) | 511,000 | 400,000
Furniture and fixtures (7 years) | 90,000 | 41,000
Office equipment (10 years) | 18,000 | 10,000
Construction in progress | 131,000 | 170,000
Leasehold improvements, gross | 4,318,000 | 3,095,000
Less accumulated depreciation | 1,446,000 | 1,317,000
Leasehold improvements, total | $ 2,872,000 | $ 1,778,000

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- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.14) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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